We pass in a vector of bowls, a nested dictionary describing the mixes of cookies in each bowl and the observations that we've made. The function tells us that there's an almost 2/3 probability of the cookies coming from Bowl 1 and just over 1/3 of being Bowl 2.

In this case there probably won't be much of a performance improvement by getting rid of the loops but we should be able to write something that's more concise and hopefully idiomatic.

Let's start by getting rid of the inner for loop. That can be replace by a call to the Reduce function like so: